Exploring Angle Measurement and Circle Arcs

What is formed when two rays share a common endpoint?

• A line

• A vertex

• An angle

• A circle

What is the common endpoint of an angle called?

• Vertex

• Axis

• Midpoint

• Intersection

Why do we measure angles?

• To calculate their diameter

• To compare their sizes

• To determine their openness

• To find their radius

What is the most common unit used to measure angles?

• Meters

• Degrees

• Radians

• Centimeters

How many degrees are there in a full circle?

• 100 degrees

• 90 degrees

• 180 degrees

• 360 degrees

What fraction of a circle's circumference corresponds to an angle of 90 degrees?

• 1/3

• 1/4

• 1/6

• 1/2

If an angle measures 1/6 of a circle's circumference, how many degrees is the angle?

• 30 degrees

• 45 degrees

• 60 degrees

• 90 degrees

What type of angle is formed when two rays are perpendicular to each other?

• Obtuse angle

• Acute angle

• Right angle

• Straight angle

What is the degree measure of an angle that is 3/4 around the circle?

• 180 degrees

• 90 degrees

• 360 degrees

• 270 degrees

What is the angle measure of half the circumference of a circle?

• 180 degrees

• 270 degrees

• 360 degrees

• 90 degrees